Bond behaviour of prestressed basalt textile reinforced concrete

Mohammed Hutaibat, Bahman Ghiassi*, Walid Tizani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Innovative Textile Reinforced Concrete (TRC) composites, although holding a significant potential, usually have poor performance under serviceability conditions. Addressing this limitation requires applying innovative techniques, such as prestressing, to utilise its potential fully. However, successful design and application of prestressing require a comprehensive understanding of the prestressing effect across scales, including the textile-to-matrix bond behaviour. To address this need, this study investigated the influence of key parameters such as prestressing level, prestressing release time and matrix age on the bond behaviour of basalt textile reinforcement. Test results show a significant influence of prestressing level and release time on textile-matrix bond behaviour. A 1-day prestressing release time resulted in a 25 % increased stiffness with only a 5 % peak load reduction followed by a further 13.7 % increase in the pull-out energy when the prestressing level was 13 %. At 35 % prestress level, 1-day released samples showed a significant reduction of 48.4 % in the peak load and 76 % reduction in the debonding energy. The positive effect of prestressing on the bond behaviour became more evident at prolonged release durations. The 7-day release samples showed a 17.4 % increase in the peak load at both prestress levels. Meanwhile, at 35 % prestress level, 34 % further increase in the debonding energy was observed. The obtained data are then utilised for providing indications on the effect of prestressing on saturated crack spacing of TRC components.
Original languageEnglish
Article number137309
Number of pages13
JournalConstruction and Building Materials
Volume438
Early online date4 Jul 2024
DOIs
Publication statusPublished - 9 Aug 2024

Keywords

  • Textile Reinforced Concrete
  • TRC
  • Prestressing
  • Prestressed TRC
  • Pull-out test
  • Basalt reinforcement, Bond behaviour

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